A molecule that is produced by living things options:
protein
lipid
monosaccharides
nucleic acid
carbon biomolecule
carbohydrate

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

not too sure but maybe in the hot springs.